I actually haven't heard anything mentioned, but as compared with my old 3G, the shutter speed seems a lot faster. As much I loved my 3G camera, the slow shutter speed used to drive me nuts. As long as you were shooting something that's sitting still (like a rock) you were fine. But taking a picture of something that's moving wildly all over the place (like a sleeping person with slow steady breathing) your picture would be so blurry. Today, with my iPhone 4 I was taking a picture out the window of a car rolling down the freeway, and it gave me a clear picture. Even the road signs that were moving past the window were all clear. I'm pleased. Has anyone heard apple mention that they were going to improve the shutter speed?